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Seasonal affective disorder (SAD)
Posted or Updated on 25 May 2023
Seasonal affective disorder (SAD) is a type of depression that comes and goes in a seasonal pattern.
SAD is sometimes known as "winter depression" because the symptoms are usually more apparent and more severe during the winter.
A few people with SAD may have symptoms during the summer and feel better during the winter.
For more information please visit the NHS website by clicking here.